Merge "disp: msm: dsi: do not enable PWM when setting bl to 0"

msm/dsi/dsi_panel.c

@@ -573,7 +573,7 @@ static int dsi_panel_update_pwm_backlight(struct dsi_panel *panel,
 		return 0;
 	}
 
-	if (!bl->pwm_enabled) {
+	if (bl_lvl != 0 && !bl->pwm_enabled) {
 		rc = pwm_enable(bl->pwm_bl);
 		if (rc) {
 			DSI_ERR("[%s] failed to enable pwm, rc=\n", panel->name,